Improvement in hydraulic seal



lubed taiet f naar can.

JAMES H. SUTTON, ou HoNEsDALE,PENNSYLVANIA.

Lam-s Pimm No. 105,277, ma .my Y12, 1870.

IMPROVEMENT IN HYDRAULIC SEAL.

The Schedule referred to in these Letters Patent and making part ojthe same.

I, J AMES H. SUTTON, of Honesdale, the county torts are in operation.

Description of the Accompanying Drawing. Figure lis a cross-section of the hydraulic main, and vertical section of the lower part of the dip-pipe,

`B, with bridge-pipe, C, andfstand-pipe, D, attached.

Figure 2 is a view of another adjustment of the sliding pipe, S, with elevating-rod, E.

Figure 3 shows the elevating-rod E attached to a cup or vessel, G, which seals by elevating` tothe place shown in dotted lines.

General Description.

A is the hydraulic main, as ordinarilyused, in fig. ],but having a hood or outside pipe, F, to the lower part of dip-pipe B. This permits the sliding pipe S to more up freely out'of the hydraulic-main, byl

means ofthe elevating-rod E, which passes through the stuffing-box H. When the retorts'are to. be charged before removing the lids, the sliding pipe4 S is moved down until the lower end-is immersed in the water or tar, T, which effectually seals the pipe and prevents the gas escaping. v

When the retorts are charged and lids replaced, the

sliding pipe is withdrawn, leaving the main free and j unobstructed for the gas to flow through it to the pu` riliers and gas-holder.

Fig. 2 has no hood, the sliding pipe S moving inside the pipe B instead.'l Y

Fig. 3 has the sliding pipe S substituted by the vessel G, which carries the sealing liquid up to the short pipe B, as shown in dotted lilies.

`'Ola-fini.

The sliding pipe S and elevating-rod E, as arranged in combination with the dip-pipe B, outside pipe or sheath F, and the hydraulic main A, for operating in the manner herein described.

JAMES H. SUTTON. Witnesses:

CHARLES S. MINOR, JNO. McIN'TosH. 

